Roof structure.



No. 842,561. PATENTED JAN. 29, 1907. 0. W. A. KOELKEBEOK.

ROOF STRUCTURE.

APPLICATION FILED MAY 2, 1905.

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b :4 TTORNEK IN VE VTOR No. 842,561. PATENTED JAN. 29, 1907.

' G. W. A. KOELKEBEGKJ ROOF STRUCTURE.

APPLICATION FILED MAY 8, 1905.

4 SHEETSSHEET 2.

A TTORNE PATENTED JAN. 29, 1907. G. W. A. KOELKEBEOK.

ROOF STRUCTURE.

APPLICATION FILED MAY 8. 1905.

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I I I r l A TTORNEY.-

No. 842,561. PATENTED JAN. 29, 1907. O. W. A. KOELKEBEOK.

ROOF STRUCTURE.

APPLIGATION FILED MAY 8,1905.

4 SHBETSSHEET 4.

- WITNESS 5; INVENTORV ATTORNEY.

CARL W. A. KOELKEBECK'OF EAST CLEVELAND, OHIO.

ROOF STRUCTURE.

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application filed May 8, .1965. Serial No. 259,383.

To all whom it may concern.-

Be it known that I, CARL W. A. KOELKE- BECK, a citizen of the UnitedStates, residing at East Cleveland, in the county of Cuyahoga and Stateof Ohio, have invented new and useful Improvements in Roof Structures,of which the following is a specification.

This invention relates to building con struction especially designed formanufacturing plants, and more particularly to a new and improved roofconstruction in which provision 18 made for a thorough ventilation ofbuilding and an ample supply of light thereto.

In the accompanying drawings, which illustrate ap licatlons of myinvention, .Fig-' ure 1 is a s1 e elevational view of a buildingconstructed in accordance with my'inven tion; Fig. 2, an end view ofone-half of the.

building; Fig. 3, a plan; Fig. 4, a sectional view, one half of the viewshowing one form of construction and the other half a modified form;Fig. 5, an enlarged vertical sectional view of one-half of a structureembodying my invention; Fig. 6, a detail sectional View showing upperchord carrying purlins for raised surfaces of roof and secondary bottomchord carrying purlins for roof; and Figs. 7,

' 8, 9, 10,.and-11, sectional detail view showing various modificationsof my triangular truss, and particularly showing the great depth of thetrusses at the center; and Fig. 12 is an enlarged view of triangulartruss of the main roof.

- tal bottom chord 7. This secondary bottom chord forms a characteristicand important feature of the present invention. The primary objects ofthe inclined chords 7 are to carry those portions 2 of the roof locatedbetween the "upper surfaces 1 and, further, to act as kne'ebraces.

The lean-to portion of the roof is desig' nated by 2,.and as thisportion is supported in a well-known manner and forms no part of .mylnvention I have not deemed it necessary to fully describe the same.

As shown, 8 designates purlins carried by the upper chords 4, whicpurlins in turn support the upper surfaces of the main roof, and 9represents purlins for the lower sur- These surfaces set forth.

chords 7.'

faces,'carried on the. supplemental bottom In Figs. 8, 9, 10, and 11 Ihave'shown tension members or hangers 10,, forming addi tional supportsfor the chords 7.

1 1 are windows in the sides of the elevated portions,-an d 12represents windows in the ends of said portions.

13 designates columns of the usual form. In Fig; 4 I have shown in thehalf-sectional views modified forms of? construction-that is to say, inone half of the figure the bottom chord is shown sloped downwardly andin the other half. this chord is level. In Fig. 5 I have shown a camberin bottom chord.

All the chords of-each truss are located in the same vertical lane.

- Attention is cal ed to the depth of my triangular truss at .the centerof truss. The ad vantages of this form of truss ,requiring much lessmeta] where the strains are less, over a truss having top and bottomchords parallel will be readily appreciated. What I-claim is.

1.- In a roof structure having roof-surfaces of different levels, atriangular truss having a top and bottom chord, diagonal members, and aninclined secondary or supplemental bottom chord coextensive with thetruss and crossing'the direction of-.the bottornchord, substantially asset forth.

2. In a roof structure having roof-surfaces I of different levels, atriangular truss havingv a top-and bottom chord, diagonal members, aninclined secondary or supplemental bottom chord coextensive with thetruss and crossing located in a vertical plane, substantially as 3. Atrangular trusahaving a top'chord, a

'thedirection of the bottomchord, all chords bottom chord, diagonalmembers, and an inclined'secondary or supplemental bottomchordcoextensive with the truss and crossing.

the direction of the bottom chord, substantially as set forth.

4 In a roof-structure of different levels, a triangular truss having atop and bottom chord, diagonal members, an

inclined sup lemental' chord coextensive. with the truss a'n crossingthedirection of the bot tom chord, and purlins carried on thesupplemental chord,.substantially as set forth.

5. In a roof structure having roof-surfaces of different levels, atriangular truss having a top and bottom chord, .diagon'al members, an

inclined supplemental bottom chord coextenhaving roof-surfaces sive withthe truss and crossing the direction I of the bottom chord,purlins'carried by the top chord, and'purlins carried by thesupplemental bottom chord, substantially as set forth.

6. In a roof structure having roof-surfaces of different levels, atriangular truss having a top and bottom chord, an inclined supplemental bottom chord coextensive with the truss and crossing thedirection of the bottom chord and tension members or hangers for said.latter chord, substantially as set forth.

7. In a roof structure having roof-surfaces of diflerent levels, atriangular truss having a carried by the top chord, a bottom chord,

an inclined supplemental bottom chord, coextensive with the truss andcrossing the direction of the bottom chord, and purlins for the lowerroof-surfaces carried by the supple- 2o mental bottom chord,substantially as set forth. M

In testimony-whereof I aflix my signature in presence of two subscribingwitnesses.

CARL W. A. KOELKEBEOK.

Witnesses: 1 I

' E. WV. Com

